The NFL saw the error of its ways Friday and announced it would incorporate a color blindness test when designing its jerseys following hundreds of complaints from fans who couldn’t tell which team was which during the Bills’ 22-17 win over the Jets on Thursday night.

People suffering from red-green color blindness said they couldn’t see a darn thing during the game due to the league’s new “Color Rush” uniforms — which came in Scarlet red for the Bills and Kelly green for the Jets and featured nearly identical designs.

One of those viewers affected was former Giants kicker Lawrence Tynes, who took to Twitter to voice his concern.

“If you are colorblind like me, this NFL game is going to be hard to follow,” he tweeted.

But while most blasted the jerseys, one person who definitely wasn’t complaining was Bills coach Rex Ryan — who cheered the all-red colors a day after socking it to his old team.

“Yeah, you don’t care how bad you look,” he said Friday. “If you win, you’re going to see it again. But it was different.”

The league later explained the snafu in a statement.

“The Color Rush jerseys are a test for four games this season, the first of which was last night,” the NFL said. “We did test the jerseys this summer on field and on television. The standard television test did not account for color blindness for fans at home that became apparent last night. We will enhance our testing to include a color blindness analysis to better address this issue in the future.”

Results from numerous studies have found that not being able to see red or green is the most common form of color-blindness and affects 10-to-13 million Americans, with most of those males.

Nike’s new “Color Rush” line of jerseys are being rolled out as part of a four-game promotion for the NFL’s Thursday night games.

The Titans will wear blue uniforms next week when they face off against the Jaguars, who will don gold.

The other games will include the Panthers at the Cowboys on Nov. 26 and the Buccaneers at the Rams on Dec. 17.

The promotion is expected to be expanded next season as officials hope to dress every team in the alternate uniforms when they play on Thursday nights.